find the two mean method ? class 0-10 10-20 20-30 30-40 40-50 frequency 12 28 32 25 13
Answers
Answered by
0
Step-by-step explanation:
Class interval Frequency (f
i
) x
i
=
2
lower limit + upper limit
f i x i
0−10 7 5 35
10−20 8 15 120
20−30 12 25 300
30−40 13 35 455
40−50 10 45 450
Σf i =50
Σf i x i =1360
Mean = Σf i Σf ix i = 50
1360=27.2
Similar questions